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Organic working medium distributed energy supply system evaporator liquid level balance control system and method

A technology of control system and liquid level balance, which is applied in the direction of machines/engines, mechanical equipment, steam engine devices, etc., and can solve the problems of reduced pump efficiency, unreasonable economy, and inability of liquid to enter the evaporator

Pending Publication Date: 2022-05-13
CHONGQING JIANGJIN SHIPBUILDING IND
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

Among them, method 1 is widely used, but the efficiency of the pump drops sharply when the flow rate is small, which is very unreasonable economically, and the pressure of method 2 will also decrease when the flow rate is small. When the evaporator pressure is high , there is a risk that liquid cannot enter the evaporator

Method used

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  • Organic working medium distributed energy supply system evaporator liquid level balance control system and method
  • Organic working medium distributed energy supply system evaporator liquid level balance control system and method
  • Organic working medium distributed energy supply system evaporator liquid level balance control system and method

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Embodiment Construction

[0019] figure 1 It is an evaporator liquid level balance control system of an organic working medium distributed energy supply system.

[0020] The waste heat steam enters the evaporator, and the organic working medium in it absorbs the waste heat and turns into steam, and the steam is passed into the expander, which drives the expander to work, drives the generator to rotate, and generates electricity. The organic working medium after work enters the condenser to cool down, and the organic working medium cooled to liquid enters the evaporator for the next cycle through the action of the working medium pump. As a power generation device, it is necessary to ensure that the speed of the main engine is maintained in a very small area to ensure the quality of power. The overall system is most stable when the evaporator and condenser are in thermal equilibrium. Among them, the steam quick-closing valve and the inlet quick-closing valve are used to protect the main engine system f...

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Abstract

The invention discloses a liquid level balance control system and method for an evaporator of an organic working medium distributed energy supply system, so that the liquid level of the evaporator and the liquid level of a condenser are balanced, and meanwhile, a pump always operates in a high-efficiency area. An organic working medium distributed energy supply system evaporator liquid level balance control system comprises a working medium pump, the outlet end of the working medium pump is sequentially connected with a working medium adjusting valve, an evaporator, an expansion machine and a condenser through a pipeline, the inlet end of the working medium pump is provided with liquid level sensors, and the liquid level sensors are used for detecting actual liquid level parameters of the evaporator and the condenser. A bypass pipeline is further arranged between the condenser and the inlet end of the working medium pump, and a working medium bypass valve is arranged on the bypass pipeline and used for returning redundant working media to the inlet end of the working medium pump through the bypass pipeline, so that the liquid level of the evaporator and the liquid level of the condenser are balanced, and meanwhile the pump always operates in a high-efficiency area.

Description

technical field [0001] The invention relates to the technical field of turbines, in particular to a liquid level balance control system and method for an evaporator in an organic working medium distributed energy supply system. Background technique [0002] The organic Rankine cycle is a Rankine cycle in which low-boiling-point organic matter is used as the working medium. The organic working medium absorbs heat from the waste heat flow in the evaporator to generate steam with a certain pressure and temperature. The steam enters the turbomachinery and expands to do work, thereby driving Generator or drag other power machinery. The water vapor discharged from the turbine releases heat to the cooling water in the condenser, condenses into a liquid state, and finally returns to the evaporator with the help of a working fluid pump, and the cycle continues in this way. Therefore, the liquid level balance of the evaporator and condenser must be maintained to ensure the normal and...

Claims

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Application Information

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IPC IPC(8): F01K25/10F01K9/04F01K13/02
CPCF01K25/10F01K9/04F01K13/02
Inventor 侯春峰周东李新宇郭擎邓浩谢小华曾勇李鹏春
Owner CHONGQING JIANGJIN SHIPBUILDING IND
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